SA

Date 10-09-2003 11:43

Dale,

"A" is an ASTM designation for materials indicating that the iron content is 50% or more (ferrous material). If the iron content is less than 50%, the next abundant element would determine the alloy type (and the specification generally would start with the letter B).

If an ASTM material specification has been adopted by ASME, an "S" is added to the designation.

The SA (SA-106) means it is a ferrous material specification from ASTM, that has been adopted for Code use by ASME. THis is important to note for material applications on any ASME/National Board Code project.

I'll email you some literature describing this in a bit more detail.

Charles

By RonG

Date 10-09-2003 11:45

Its an ASTM designation and I belive the S is for Seamless pipe and the A is as in the alloy A106. I may be way out in left field tho.

By chall

Date 10-09-2003 11:50

Hi Ron,

Typically in material specifications dealing with pipe (ASME), there is a "type" designation within the particular spec. (E for electric resistance welded and S for seamless).

One example is SA53, type E or S.

Charles

By dasimonds (**)

Date 10-09-2003 18:22

Thanks guys.
Dale Simonds

By G.S.Crisi (****)

Date 10-09-2003 20:46

Ron,
Chas Hall is right.
Giovanni S. Crisi
Sao Paulo - Brazil